Several people I know (here in far left sOcIaLiSt Seattle) who hated Clinton and voted third party in 2016 are holding their nose and voting for Biden this year. I also know a former Republican who supported Kasich in the 2016 primary and despises Trump, but couldn't quite get himself to vote for Clinton in 2016 saying he "loves Biden", and is going to vote straight-ticket Democrat this year. He's from Portland, so that's not going to make a big difference, but I imagine there are definitely a fair number of younger voters like him.
I mean, I personally know at least four Trump -> Biden voters (although I have my doubts about whether one of them will actually end up voting for Biden on Election Day) and two blank ballot/third party -> Biden voters.
